Entity Developer is a powerful ORM designer for NHibernate, ADO.NET Entity Framework, LinqConnect and LINQ to SQL. You can use Model-First and Database-First approaches to design your model and generate C# or Visual Basic .NET code for it. It introduces new approaches for designing ORM models, boosts productivity, and facilitates the development of database applications. Entity Developer allows you to create and edit Entity Framework, NHibernate, and LINQ to SQL models visually, without typing a line of XML code.

ConceptBase is a multi-user deductive and object-oriented database system for metamodeling and method engineering. The system includes a graphical client that builds upon the logic-based features of the ConceptBase server. The data model is O-Telos.ConceptBase is distributed under a FreeBSD-style copyright license.

Application Ermodeller is a free CASE tool for data modelling which is built in Java. This tool supports conceptual and logical data modelling and in the final step, it allows to create physical model that is specific for particular DBMS.

ManyDesigns Portofino is a model-driven web application framework that allows you to build high-quality enterprise information systems in shorter development times. It comprises a development environment for modelers and a run-time environment for the end users of the developed applications. The modelers can be analysts, consultants, designers and software developers. Portofino offers the short-term benefit of rapid development and the long-term benefit of low maintenance cost and easy evolution.

ModelGoon brings the power of visual models in a Java development. It is intended for developers during implementation activities. ModelGoon provides actually three diagram which are built directly from the java sources.